Cone crusher with non-eccentric drive



y 27, 1969 v. A. MASLENNIKOV ETAL 3,446,445

CONE CRUSHER WITH NON-ECCENTRIC DRIVE Filed Aug. 26, 1965 N 9 2 i '6 N 5 w 3 7\TI b 31 a a l6 05 I E J j a US. Cl. 241-209 3 Claims ABSTRACT OF THE DISCLOSURE A cone crusher in which a crushing bowl is driven by a plurality of cylinders mounted vertically and arranged to engage the circumference of the bowl and drive the bowl in a circular oscillatory path relative to a stationary crushing head which receives a shaft on which the bowl is hingeably mounted.

The present invention relates to cone gyratory crushers with non-eccentric drives and more specifically to crushers with a hydraulic drive for the crushing bowl, which includes a plurality of impulse devices. In crushers known in the art, the impulse devices and the crushing bowl are mounted in special housing parts, which makes the crusher construction very complicated and impractical.

Owing to the aforesaid disadvantages, the known crushers have not found wide application.

The object of the present invention is to provide a crusher of a simpler and more reliable design.

In accordance with the invention there is provided a cone crusher having a stationary crushing head with a shaft mounted in a frame supporting a crushing bowl via a spherical bearing mounted on an upper cylindrical portion of the shaft. The crushing bowl is moved in a circular oscillatory path under the action of a plurality of vertical cylinders mounted on the frame at the periphery of the crushing bowl, the piston in each cylinder supporting a ball in a socket therein and acting upon the flat bottom surface of the bowl through said ball.

A detailed description of the present invention is given hereinbelow, reference being had to the accompanying drawing in which the sole figure shows in vertical section a crusher according to the present invention.

The crusher according to the invention consists of a frame 1 incorporating central hub 2 with axle 3 installed in the latter, which axle carries crushing cone 4. Crushing bowl 6 is fixed by means of spherical bearing to the upper part of axle 3. Bearing is installed in journal 7 connected by ribs 8 to crushing bowl 6. The crushing bowl 6 has an annular flange 6a and a ring 16 with a flat bottom surface is mounted on flange 6a. The journal is surmounted by cover 9. Bowl 6 is connected with frame 1 by means of rod 10 passing inside axle 3. Flanges 11 of frame 1 accommodate hydraulic cylinders 12. The crusher of the present invention incorporates seven hydraulic cylinders; their number may vary depending upon the size of a crusher.

Cylinders 12 are insalled around crushing bowl 6 so that pistons 13 of cylinders 12 actuate, through balls 14, bowl 6 along its periphery.

Pressure fluid is fed to cylinders 12 from any respective source of pressure, in known manner, for example, as shown in German Patent 1,157,459, in such a way, that the beginning of each cylinder action is shifted in time with regard to that of a preceding one in the series. In the drive of the crushing member operating in the above nited States Patent 0 3,446,445 Patented May 27, 1969 of the hydraulic cylinders should be a multiple of the number of cylinders uniformly placed along the periphery.

Axle 3, cover 15 and hub 2 constitute a hydraulic cylinder of the crushing cone, where axle 3 serves as a plunger. Axle 3 Carrying crushing cone 4 can move upward and downward in hub 2 and bearing 5.

By changing the volume of fluid in the hydraulic cylinder it is possible to control the size of the discharge opening. An up-and-down reciprocating motion, which may be applied to crushing cone 4, is also used to let uncurshable articles through the crushing space. The possibility of a complex movement of crushing bowl 6 with regard to pistons 13 is provided by balls 14, mounted in spherical sockets in pistons 13.

Pneumatic cylinders can be employed instead of hydraulic ones.

Although the present invention has been described with reference to the preferred embodiment thereof, various modifications can be made without departing from the spirit and scope of the invention.

We claim:

1. In a cone crusher in which the working movement of a crushing bowl is provided by a plurality of impulse devices: a frame having an outwardly projecting annular flange; a stationary crushing head with a shaft mounted within the frame; said shaft including an upper cylindrical portion; a spherical bearing mounted on said cylindrical portion of said shaft; a crushing bowl surrounding said crushing head and hinged to said spherical bearing to be capable of moving in a circular oscillatory path; and means for moving said crushing bowl in said circular draulic ones.

2. In a crusher as claimed in claim 1, wherein said crusher bowl has an annular flange projecting outward; a ring mounted on said crushing bowl and adjacent the bottom surface of said annular flange of said crushing bowl; said ring having a flat bottom surface.

3. In a crusher as claimed in claim 5, wherein said means for moving said crushing bowl in said circular oscillatory path comprises a plurality of cylinders mounted vertically on said annular flange of said frame around said crushing bowl, each cylinder including a piston slidably mounted therein and having an end portion with a sphere-shaped socket; a ball nested in said sphereshaped socket; said piston acting through said ball upon said fiat bottom surface of said ring.

References Cited UNITED STATES PATENTS 850,491 4/ 1907 Redding 241-206 461,583 10/1891 Lowry 241209 1,901,766 3/1933 Newhouse 241-23l 2,791,383 5/ 1957 Kjelgaard 241231 FOREIGN PATENTS 1,291,230 3/ 1962 France.

623,423 2/ 1948 Great Britain. 1,157,459 6/ 1955 Germany. 1,137,928 10/1962 Germany.

ANDREW R. JUHASZ, Primary Examiner. 

